On 2010-06-12 5:17 PM, David W Noon wrote: >> On 12 Jun 2010, at 12:35, David W Noon wrote: >>> ... Dovecot, but quickly replaced by dbmail.
>> Can I ask you why? > Certainly. > > I wanted the messages to be stored in a single, dedicated logical > volume in my DASD farm. Dovecot always stored them in each user's > ~/Mail/ directory, so they were all over the /home L.V. Dovecot will store them where you tell it to. You could have easily stored them all in a single directory like /var/virtual/mail/user, or even used a hashed directory scheme (which might be desirable for very large installations like ISPs)... > In contrast, dbmail uses a database, in my case PostgreSQL, so it is > up to the database administrator to decide where they go; but it is > always in the one place. This makes for easy backup and restore: a > cron jobs runs pg_dump every night on the dbmail database.. Storing mail in a database sounds interesting, but it *will* introduce a very noticeable performance hit, there is simply no way around it... >> I have found the author of Dovecot to be wonderfully responsive, >> pushing out a fix for a deal-breaker issue for my site within hours >> of me reporting it. +5 Timo is coding madman... ;) > Sieve is also integrated into dbmail. And dovecot... and 2.0 will have even better integration. >> The reject syntax [for sieve] seems nice and clear, but if the MX >> server (for your email's domain name) has already accepted the >> message then it's not really much good rejecting it. In fact, doing >> so is surely frowned upon, isn't it? > I use a quarantine folder in my IMAP4 account, and my sieve script > places spam and infected messages there. Since the physical location > is on a logical volume that holds a PostgreSQL tablespace, any malware > is not executable, as that L.V. is mounted with "noexec". This is > another advantage over placing mail in the /home L.V., in each user's > home directory. While dovecot+sieve does require a 'home' directory for sieve to work, it doesn't have to be the users real home directory, and with dovecot-LDA+sieve, you can safely reject at smtp time, and its vacation message system is very sane (doesn't send vacation messages when it shouldn't, like to mail lists, etc)...
